NOTICE: I am not able to upload the screenshots, so I am not able to show the error!
We are running Artifactory 6.7.3 and a cached remote debian repository.
It is replicating http://ftp.de.debian.org/debian/
We have set up an standard remote caching debian repository.
The file “sources.xz” is outdated and should be replaced with a version from 07-Feb-2019.
The configuration of the cache is not changed:
I think, this could be a bug on your side. I think the caching should look for a new version after “Metadata time retrieval cache period” ended.
Thanks for your help.